#!/usr/bin/perl
#
# tracemunch -- compactify ncurses trace logs
#
# The error logs produced by ncurses with tracing enabled can be very tedious
# to wade through.  This script helps by compacting runs of log lines that
# can be conveniently expressed as higher-level operations.
#
# ($Id: tracemunch 153052 2008-08-13 01:17:50Z coreos $)

$putattr="PutAttrChar\\('(.)' = 0x.., {A_NORMAL}\\) at \\(([0-9]+), ([0-9]+)\\)";
$waddnstr="waddnstr\\(0x([0-9a-f]+),\"([^\"]+)\",[0-9]+\\) called {A_NORMAL}";

sub transaddr
{
    $arg = $_[0];

    $arg =~ s/$curscr/curscr/ if ($curscr);
    $arg =~ s/$newscr/newscr/ if ($newscr);
    $arg =~ s/$stdscr/stdscr/ if ($stdscr);

    return $arg;
}

while (<STDIN>)
{
CLASSIFY: {
	# Transform window pointer addresses so it's easier to compare logs
    	$awaiting = "curscr" if ($_ =~ /creating curscr/);
    	$awaiting = "newscr" if ($_ =~ /creating newscr/);
    	$awaiting = "stdscr" if ($_ =~ /creating stdscr/);
	if ($awaiting && $_ =~ /newwin: returned window is 0x([0-9a-f]+)/)
	{
	    $curscr = "0x$1" if ($awaiting eq "curscr");
	    $newscr = "0x$1" if ($awaiting eq "newscr");
	    $stdscr = "0x$1" if ($awaiting eq "stdscr");
	    $awaiting = "";
	}

	# Compactify runs of PutAttrChar calls (TR_CHARPUT)
	if ($_ =~ /$putattr/)
	{
		$putattr_chars = $1;
		$starty = $2;
		$startx = $3;
		while (<STDIN>)
		{
			if ($_ =~ /$putattr/) {
				$putattr_chars .= $1;
			} else {
				last;
			}
		}
		print "RUN of PutAttrChar()s: \"$putattr_chars\" from ${starty}, ${startx}\n";
		redo CLASSIFY;
	}

	# Compactify runs of waddnstr calls (TR_CALLS)
	if ($_ =~ /$waddnstr/)
	{
		$waddnstr_chars = $2;
		$winaddr = $1;
		while (<STDIN>)
		{
			if ($_ =~ /$waddnstr/ && $1 eq $winaddr) {
				$waddnstr_chars .= $2;
			} else {
				last;
			}
		}
		$winaddstr = &transaddr($winaddr);
		print "RUN of waddnstr()s: $winaddr, \"$waddnstr_chars\"\n";
		redo CLASSIFY;
	}

	# More transformations can go here

	# Repeated runs of anything
	$anyline = &transaddr($_);
	$repeatcount = 1;
	while (<STDIN>) {
	    if (&transaddr($_) eq $anyline) {
		$repeatcount++;
	    } else {
		last;
	    }
	}
	if ($repeatcount > 1) {
		print "${repeatcount} REPEATS OF $anyline";
	} else {
		print $anyline
	}
	redo CLASSIFY if $_;

	} # :CLASSIFY
}

# tracemunch ends here
